St Charles Weather Forecast

    • 66
    • 88

    Rain Showers

    • 63
    • 77

    Rain Showers Likely

    • 65
    • 79

    Chance Thunderstorms

    • 62
    • 79

    Rain Showers Likely

    • 57
    • 73

    Mostly Cloudy

    • 58
    • 73

    Slight Chance Thunderstorms

Today 12 Aug Cuming

Mostly cloudy with Showers likely with a chance of Thunderstorms this Morning, then partly sunny this afternoon. Some Thunderstorms may be severe with damaging Winds and large hail. Highs in the upper 80s. Northeast Winds 10 to 15 Mph. Gusts up to 30 Mph this morning. Chance of rain 70 percent.

Tonight 12 Aug Cuming

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Thunderstorms. A chance of Showers in the Evening, then Showers after midnight. Humid with Lows in the mid 60s. East Winds around 10 Mph. Chance of rain 90 percent.

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St Charles Temperature Statistics

August Temperature

Fremont Municipal Airport (26.1 miles)

  • Lowest 8 August, 2026

    57.6 °F

  • Average August

    72.3 °F

  • Highest 10 August, 2026

    89.6 °F

Climate (2021–2026)

Fremont Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    42.5 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    65 °F
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